def create_model():
set_gpu()
TRAIN_DATA, TEST_DATA = load_data()
nlp = spacy.load("en_pytt_bertbaseuncased_lg")
textcat = nlp.create_pipe("pytt_textcat", config={"exclusive_classes": True})
for label in ("POSITIVE", "NEGATIVE"):
textcat.add_label(label)
nlp.add_pipe(textcat)
optimizer = nlp.resume_training()
dropout = decaying(0.6, 0.2, 1e-4)
print("Training the model...")
for i in range(10):
print("Iteration =>", i)
random.shuffle(TRAIN_DATA)
losses = {}
for batch in get_batches(TRAIN_DATA, "textcat"):
texts, cats = zip(*batch)
print(texts, cats)
nlp.update(texts, cats, sgd=optimizer, losses=losses, drop=dropout)
print(i, losses)
with nlp.use_params(optimizer.averages):
nlp.to_disk("models")
def test_issue3447():
sizes = decaying(10.0, 1.0, 0.5)
size = next(sizes)
assert size == 10.0
size = next(sizes)
assert size == 10.0 - 0.5
size = next(sizes)
assert size == 10.0 - 0.5 - 0.5
def test_issue3447():
sizes = decaying(10.0, 1.0, 0.5)
size = next(sizes)
assert size == 10.0
size = next(sizes)
assert size == 10.0 - 0.5
size = next(sizes)
assert size == 10.0 - 0.5 - 0.5
def test_decaying():
sizes = decaying(10., 1., .5)
size = next(sizes)
assert size == 10.
size = next(sizes)
assert size == 10. - 0.5
size = next(sizes)
assert size == 10. - 0.5 - 0.5
def train_entity(self, nlp, output_dir, train_data, n_iter, dropout):
"""Load the model, set up the pipeline and train the entity recognizer.
Keyword arguments:
model -- path to the model if existent
output_dir -- path where model is saved at
n_iter -- amount of times data is trained with
train_data -- training data in BILOU Format
Returns:
output_dir -- path to model
"""
dropout = decaying(0.6, 0.2, 1e-4)
pipe_exceptions = ["ner", "trf_wordpiecer", "trf_tok2vec"]
other_pipes = [
pipe for pipe in nlp.pipe_names if pipe not in pipe_exceptions
]
disabled = nlp.disable_pipes(*other_pipes)
logging.info("Started training entities...")
optimizer = nlp.begin_training()
for iteration in range(n_iter):
random.shuffle(train_data)
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(train_data, size=compounding(4.0, 32.0, 1.001))
for batch in batches:
texts, annotations, _ = zip(*batch)
nlp.update(
texts, # batch of texts
annotations, # batch of annotations
drop=next(
dropout), # dropout - make it harder to memorise data
sgd=optimizer,
losses=losses,
)
p, r, f = self.evaluate_entity(nlp)
self.entity_score.append([p, r, f])
logging.info("Finished %s iteration for NER with %s losses",
iteration, losses)
self.losses_ner.append(losses)
logging.info("Finished training entities...")
disabled.restore()
# save model to output directory
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.to_disk(output_dir)
logging.info("Saved entity model to %s", output_dir)
return output_dir
def __init__(self):
self.model_file = 'custommodel'
self.train_data_file = 'data/train-data.txt'
self.dropout = decaying(0.1, 0.0, 1e-4)
self.iters = 20
self.batch_size = 2
#address
self.address_label = "GPE"
address_pattern = '\d+[\w\s]+(?:avenue|ave|road|rd|boulevard|blvd|street|st|drive|dr|court|ct|highway|hwy|square|sq|park|parkway|pkwy|circle|cir|trail|trl)[,*\w\s]+([a-z][0-9][a-z]\s*[0-9][a-z][0-9](,*\s*canada)?)'
self.address_pattern_object = re.compile(address_pattern,
re.IGNORECASE)
#date
self.date_label = "DATE"
date_pattern = '\d+(jan|january|feb|february|mar|march|apr|april|may|jun|june|jul|july|aug|august|sep|september|oct|october|nov|november|dec|december)\d+'
self.date_pattern_object = re.compile(date_pattern, re.IGNORECASE)
def train(new_model_name='persons', output_dir=None):
optimizer = nlp.begin_training()
other_pipes = [pipe
for pipe
in nlp.pipe_names
if pipe != 'ner']
with nlp.disable_pipes(*other_pipes): # only train NER
for itn in range(5):
batches = minibatch(to_train_ents, size=compounding(4., 32., 1.001))
losses = {}
# for text, annotations in to_train_ents:
# nlp.update([text], [annotations], sgd=optimizer, drop=0.40,
# losses=losses)
random.shuffle(to_train_ents)
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts, annotations, sgd=optimizer, drop=next(decaying(0.35, 0.25, 1e-4)),
losses=losses)
print(losses)
if output_dir is None:
output_dir = "./model1"
noutput_dir = Path(output_dir)
if not noutput_dir.exists():
noutput_dir.mkdir()
if output_dir is not None:
nlp.meta['accuracy'] = {'ner': best_acc}
nlp.meta['name'] = new_model_name
with nlp.use_params(optimizer.averages):
nlp.to_disk(output_dir)
random.shuffle(to_train_ents)
# quick test the saved model
test_text = 'Gina Haspel, President Donald Trump’s controversial pick to be the next CIA director, has officially been confirmed by the Senate in a 54-45 vote.'
print("Loading from", output_dir)
nlp2 = spacy.load(output_dir)
doc2 = nlp2(preprocess(nlp2(test_text)))
print("Entities in '%s'" % doc2)
for ent in doc2.ents:
print(ent.label_, ent.text)
def train_ner(train_data, validation_data):
nlp = spacy.blank('en')
if 'ner' not in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner, last=True)
else:
ner = nlp.get_pipe('ner')
for raw_text, annotations in train_data:
'''doc = nlp.make_doc(raw_text)
for word in doc:
_ = nlp.vocab[word.orth]'''
for ent in annotations.get("entities"):
ner.add_label(ent[2])
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'ner']
with nlp.disable_pipes(*other_pipes):
optimizer = nlp.begin_training()
dropout = decaying(0.6, 0.2, 0.03)
'''for itn in range(10):
random.shuffle(train_data)
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(train_data, size=compounding(4.0, 32.0, 1.01))
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts, annotations, drop=next(dropout), sgd=optimizer, losses=losses)'''
for itn in range(10):
random.shuffle(train_data)
losses = {}
for text, annotations in train_data:
nlp.update([text], [annotations],
drop=next(dropout),
sgd=optimizer,
losses=losses)
print("Losses: {}".format(losses))
validate(nlp, validation_data, itn + 1)
print('Epoch {} complete.\n'.format(itn + 1))
return nlp
def main(model='en',
new_model_name='en-animals',
output_dir=animal_model,
use_gpu=-1,
n_iter=20):
if model_exists(output_dir):
print('model exists.')
test_model(output_dir, use_gpu)
return
"""Set up the pipeline and entity recognizer, and train the new entity."""
if model is not None:
print("Loading model '%s' ... " % model)
if (use_gpu >= 0):
spacy.util.use_gpu(0)
nlp = spacy.load(model) # load existing spaCy model
else:
print("Creating blank 'en' model ... ")
nlp = spacy.blank('en') # create blank Language class
# Add entity recognizer to model if it's not in the pipeline
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'ner' not in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner)
else:
# otherwise, get it, so we can add labels to it
ner = nlp.get_pipe('ner')
ner.add_label(LABEL) # add new entity label to entity recognizer
print('begin training... ')
if model is None:
optimizer = nlp.begin_training(device=use_gpu)
else:
# Note that 'begin_training' initializes the models, so it'll zero out
# existing entity types.
optimizer = nlp.entity.create_optimizer()
# Take dropout and batch size as generators of values -- dropout
# starts high and decays sharply, to force the optimizer to explore.
# Batch size starts at 1 and grows, so that we make updates quickly
# at the beginning of training.
dropout_rates = decaying(env_opt('dropout_from', 0.6),
env_opt('dropout_to', 0.2),
env_opt('dropout_decay', 1e-4))
batch_sizes = compounding(env_opt('batch_from', 15),
env_opt('batch_to', 30),
env_opt('batch_compound', 1.005))
# disable other pipes during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'ner']
with nlp.disable_pipes(*other_pipes): # only train NER
n_train_words = count_train()
for i in range(n_iter):
losses = {}
random.shuffle(TRAIN_DATA)
with tqdm.tqdm(total=n_train_words, leave=False) as pbar:
for batch in minibatch(TRAIN_DATA, size=batch_sizes):
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=next(dropout_rates),
losses=losses)
pbar.update(count_tokens(texts))
print('{}/{} loss: {}'.format(i + 1, n_iter, losses))
for text in test_texts:
doc = nlp(text)
print("Entities in '%s'" % text)
for ent in doc.ents:
print(ent.label_, ent.text)
# save model to output directory
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.meta['name'] = new_model_name # rename model
nlp.to_disk(output_dir)
print("Saved model to", output_dir)
# test the saved model
test_model(output_dir, use_gpu)
nlp.add_pipe(ner, last=True)
ner.add_label("KATZ") # add all new labels
n_iter = 100 # number of iterations
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "ner"
] # get names of other pipes to disable them during training
annotations = []
# ********************************
# start training
# ********************************
with nlp.disable_pipes(*other_pipes): # only train NER
optimizer = nlp.begin_training()
dropouts = decaying(0.3, 0.1, 1e-4)
batch_size = compounding(
4.0, 32.0, 1.001) # https://spacy.io/usage/training#tips-batch-size
for itn in range(n_iter):
shuffle(TRAIN_DATA)
losses = {}
batches = minibatch(
TRAIN_DATA,
size=batch_size) # batch up the examples using spaCy's minibatch
dropout = next(dropouts)
print(itn)
print("Dropout", dropout)
for batch in batches:
def _set_params(self, kwargs):
"""
Set input parameters based on the request.
:
:For details refer to the GitHub project: https://github.com/nabeel-oz/qlik-py-tools
"""
# Set default values which will be used if execution arguments are not passed
# Default parameters:
self.debug = False
self.model = 'en_core_web_sm'
self.custom = False
self.base_model = 'en_core_web_sm'
self.blank = False
self.epochs = 100
self.batch_size = compounding(4.0, 32.0, 1.001)
self.drop = 0.25
self.test = 0
# Extract the model path if required
try:
# Get the model name from the first row in the request_df
self.model = self.request_df.loc[0, 'model_name']
# Remove the model_name column from the request_df
self.request_df = self.request_df.drop(['model_name'], axis=1)
except KeyError:
pass
# If key word arguments were included in the request, get the parameters and values
if len(kwargs) > 0:
# Transform the string of arguments into a dictionary
self.kwargs = utils.get_kwargs(kwargs)
# Set the debug option for generating execution logs
# Valid values are: true, false
if 'debug' in self.kwargs:
self.debug = 'true' == self.kwargs['debug'].lower()
# Additional information is printed to the terminal and logs if the paramater debug = true
if self.debug:
# Increment log counter for the class. Each instance of the class generates a new log.
self.__class__.log_no += 1
# Create a log file for the instance
# Logs will be stored in ..\logs\SpaCy Log <n>.txt
self.logfile = os.path.join(
os.getcwd(), 'logs',
'SpaCy Log {}.txt'.format(self.log_no))
self._print_log(1)
# Set whether the model (if getting named entites) or base model (if retraining) is a custom model
# i.e. not one of the pre-trained models provided by spaCy
if 'custom' in self.kwargs:
self.custom = 'true' == self.kwargs['custom'].lower()
# Set the base model, i.e an existing spaCy model to be retrained.
if 'base_model' in self.kwargs:
self.base_model = self.kwargs['base_model'].lower()
# Set the retraining to be done on a blank Language class
if 'blank' in self.kwargs:
self.blank = 'true' == self.kwargs['blank'].lower()
# Set the epochs for training the model.
# This is the the number times that the learning algorithm will work through the entire training dataset.
# Valid values are an integer e.g. 200
if 'epochs' in self.kwargs:
self.epochs = utils.atoi(self.kwargs['epochs'])
# Set the batch size to be used during model training.
# The model's internal parameters will be updated at the end of each batch.
# Valid values are a single integer or compounding or decaying parameters.
if 'batch_size' in self.kwargs:
# The batch size may be a single integer
try:
self.batch_size = utils.atoi(self.kwargs['batch_size'])
# Or a list of floats
except ValueError:
sizes = utils.get_kwargs_by_type(self.kwargs['batch_size'])
# If the start < end, batch sizes will be compounded
if sizes[0] < sizes[1]:
self.batch_size = compounding(sizes[0], sizes[1],
sizes[2])
# else bath sizes will decay during training
else:
self.batch_size = decaying(sizes[0], sizes[1],
sizes[2])
# Set the dropout rate for retraining the model
# This determines the likelihood that a feature or internal representation in the model will be dropped,
# making it harder for the model to memorize the training data.
# Valid values are a float lesser than 1.0 e.g. 0.35
if 'drop' in self.kwargs:
self.drop = utils.atof(self.kwargs['drop'])
# Set the ratio of data to be used for testing.
# This data will be held out from training and just used to provide evaluation metrics.
# Valid values are a float >= zero and < 1.0 e.g. 0.3
if 'test' in self.kwargs:
self.test = utils.atof(self.kwargs['test'])
# Debug information is printed to the terminal and logs if the paramater debug = true
if self.debug:
self._print_log(2)
# Remove the kwargs column from the request_df
self.request_df = self.request_df.drop(['kwargs'], axis=1)
def determine_dropout(self):
"""
For small datasets, it’s useful to set a high dropout rate at first, and decay it down towards a more reasonable value. This helps avoid the network immediately overfitting, while still encouraging it to learn some of the more interesting things in your data.
"""
dropout = decaying(self.dropout_start, self.dropout_end, self.interval)
return dropout
def train_textcat(nlp,
train_data,
init_tok2vec=None,
continue_training=False,
epochs=10,
dropout_rates=(0.6, 0.2, 1e-4),
minibatch_sizes=(1.0, 64.0, 1.001),
valid_docs=None,
valid_labels=None,
output_dir=None,
use_tqdm=False):
"""Train, evaluate, and store TextCategorizer model."""
if "textcat" in nlp.pipe_names:
train_eval_time = time.time()
if valid_docs is not None or init_tok2vec is not None:
textcat = nlp.get_pipe("textcat")
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "textcat"]
with nlp.disable_pipes(*other_pipes): # only train textcat
# if base
if continue_training:
# Start with an existing model, use default optimizer
optimizer = nlp.resume_training()
else:
optimizer = nlp.begin_training()
# load pretrained LMAO weights
if init_tok2vec is not None:
with init_tok2vec.open("rb") as file_:
print("Loading LMAO weights...")
textcat.model.tok2vec.from_bytes(file_.read())
print("Training the model...")
print("{:^5}\t{:^5}\t{:^5}\t{:^5}".format("LOSS", "P", "R", "F"))
# create batch sizes
min_batch_size, max_batch_size, update_by = minibatch_sizes
batch_sizes = compounding(min_batch_size, max_batch_size,
update_by)
# create decaying dropout
starting_dropout, ending_dropout, decay_rate = dropout_rates
dropouts = decaying(starting_dropout, ending_dropout, decay_rate)
best_avg_f1 = 0
for i in range(epochs):
print("Epoch:", i)
losses = {}
# batch up the examples using spaCy's minibatch
random.shuffle(train_data)
if use_tqdm:
train_data = tqdm(train_data, leave=False)
batches = minibatch(train_data, size=batch_sizes)
for batch, dropout in zip(batches, dropouts):
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=dropout,
losses=losses)
# evaluate model on validatation set
if valid_docs is not None and valid_labels is not None:
with textcat.model.use_params(optimizer.averages):
scores, valid_label_set = evaluate(
textcat, valid_docs, valid_labels)
print("{0:.3f}\t{1:}\t{2:}\t{3:}".format(
losses["textcat"], "_____", "_____", "_____"))
avg_f1 = 0
for vc in valid_label_set:
print("{0:}\t{1:.3f}\t{2:.3f}\t{3:.3f}".
format( # print as a table
vc,
scores[vc]["precision"],
scores[vc]["recall"],
scores[vc]["f1-score"],
))
avg_f1 += scores[vc]["f1-score"]
print("Accuracy:", scores["accuracy"])
print("_____________________________")
# assign best model, score, and epoch
avg_f1 = avg_f1 / len(valid_label_set)
if avg_f1 > best_avg_f1:
best_avg_f1 = avg_f1
# overwrite the weak with the strong
store_model(output_dir, nlp, optimizer)
else:
print("{0:.3f}\t{1:}\t{2:}\t{3:}".format(
losses["textcat"], "_____", "_____", "_____"))
if use_tqdm:
# train_data was put into tqdm object and won't shuffle properly due to indexing
# put train_data back to it's original type
train_data = train_data.iterable
# store final model if no evaluation performed
if valid_docs is None:
store_model(output_dir, nlp, optimizer)
print("Finished after: {0:.2f} minutes".format(
(time.time() - train_eval_time) / 60))
else:
raise NameError(
"Pipe 'textcat' is not in the nlp pipeline. Be sure to run mk_model() before training."
)
return nlp
def train_classifier_model(self, task, proj):
# TODO buscar essas variaveis dos parametros da task, project ou self.config
n_iter = 20
n_texts = 2000
init_tok2vec = None
languages = self.cfg.get('languages', {})
self.logging.debug(f"languages: {languages}")
for lang, model in languages.items():
# data sample query selection
proj['index_query'] = util.createTrainDataQuery(proj, lang)
# load correct dataset from index
(train_texts, train_cats), (
dev_texts,
dev_cats), categories = self.generate_classifier_data(proj)
if len(categories) == 0 or len(train_texts) == 0:
# only load the model if is data to train
self.logging.debug(
f"No new training data found in index for language: {lang}"
)
continue
# check if already exists the taget model file, if so then load it, and update this existing model
model_file, _, _ = util.getDataFilename(self.cfg,
f"{proj['id']}/{lang}",
None, None)
_nlp = None
if os.path.exists(model_file):
self.logging.info(f"Loading project model '{model_file}'")
_nlp = spacy.load(model_file)
else: # fallback to language core model
self.logging.info(f"Loading default lang model '{model}'")
_nlp = spacy.load(model)
# add the text classifier to the pipeline if it doesn't exist
if "textcat" not in _nlp.pipe_names:
textcat = _nlp.create_pipe("textcat",
config={
"exclusive_classes": True,
"architecture": "simple_cnn"
})
_nlp.add_pipe(textcat, last=True)
# otherwise, get it, so we can add labels to it
else:
textcat = _nlp.get_pipe("textcat")
# add label to text classifier
self.logging.info(f"Categories: {categories}")
for cat in categories:
textcat.add_label(cat)
train_texts = train_texts[:n_texts]
train_cats = train_cats[:n_texts]
self.logging.info(
f"Using {n_texts} examples ({len(train_texts)} training, {len(dev_texts)} evaluation)"
)
train_data = list(
zip(train_texts, [{
"cats": cats
} for cats in train_cats]))
# get names of other pipes to disable them during training
pipe_exceptions = ["textcat", "trf_wordpiecer", "trf_tok2vec"]
other_pipes = [
pipe for pipe in _nlp.pipe_names if pipe not in pipe_exceptions
]
with _nlp.disable_pipes(*other_pipes): # only train textcat
optimizer = _nlp.begin_training()
if init_tok2vec is not None:
with init_tok2vec.open("rb") as file_:
textcat.model.tok2vec.from_bytes(file_.read())
self.logging.info("Training the model...")
self.logging.debug("{:^5}\t{:^5}\t{:^5}\t{:^5}".format(
"LOSS", "P", "R", "F"))
batch_sizes = compounding(4.0, 32.0, 1.001)
dropout = decaying(0.6, 0.2, 1e-4)
for _i in range(n_iter):
losses = {}
# batch up the examples using spaCy's minibatch
random.shuffle(train_data)
batches = minibatch(train_data, size=batch_sizes)
for batch in batches:
texts, annotations = zip(*batch)
_nlp.update(texts,
annotations,
sgd=optimizer,
drop=next(dropout),
losses=losses)
#_nlp.update(texts, annotations, sgd=optimizer, drop=0.2, losses=losses)
with textcat.model.use_params(optimizer.averages):
# evaluate on the dev data split off in load_data()
scores = self.evaluate(_nlp.tokenizer, textcat,
dev_texts, dev_cats)
self.logging.debug("{0:.3f}\t{1:.3f}\t{2:.3f}\t{3:.3f}".
format( # print a simple table
losses["textcat"],
scores["textcat_p"],
scores["textcat_r"],
scores["textcat_f"],
))
# save the model
with _nlp.use_params(optimizer.averages):
_nlp.to_disk(model_file)
self.logging.info(f"Saved model to {model_file}")
# Load the saved model
self.loaded_models[f"{proj['id']}/{lang}"] = spacy.load(model_file)
self.logging.debug(self.loaded_models)
def modelSpacy(model=None,
new_model_name="Product",
output_dir=None,
n_iter=40,
training_data=None,
validation_data=None,
validation_plot=False,
dropout=(0.35, 0.35, 1),
batch=(1., 32., 1.001),
verbose=1):
# IMPORT LIBRARIES
from bloo.mlMaster import spacyEvaluate
from spacy.util import decaying
# DECLARE VARIABLES
lossesList = []
lossesList.append(len(training_data))
metricsLocal = {"precision": [0], "recall": [0], "f1score": [0]}
# We want to reproduce the same random situation in each test
random.seed(0)
if model is not None:
nlp = spacy.load(model)
else:
nlp = spacy.blank("en")
if (verbose >= 1):
print("Created a blank 'en' model")
# Now we add the NER recognizer to the model
if "ner" not in nlp.pipe_names:
ner = nlp.create_pipe("ner")
nlp.add_pipe(ner)
else:
ner = nlp.get_pipe("ner")
# Add the new entity label to entity recognizer
ner.add_label("PRODUCTS")
# Decide whether to start or to resume training
if model is None:
optimizer = nlp.begin_training()
else:
optimizer = nlp.resume_training()
move_names = list(ner.move_names)
# Get names of other pipes to disable them during training
pipe_executions = ["ner", "trf_wordpiercer", "trf_tok2vec"]
other_pipes = [
pipe for pipe in nlp.pipe_names if pipe not in pipe_executions
]
# Only train the given NER
with nlp.disable_pipes(*other_pipes), warnings.catch_warnings():
warnings.filterwarnings("once", category=UserWarning, module='spacy')
sizes = compounding(batch[0], batch[1], batch[2])
dropout = decaying(dropout[0], dropout[1], dropout[2])
# batch up the examples using spacy's mini batch
for itn in range(n_iter + 1):
random.shuffle(training_data)
batches = minibatch(training_data, size=sizes)
losses = {}
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=next(dropout),
losses=losses)
# Print information about the current iteration after it is finished so we can better visualize the progress
if (verbose >= 1):
print("Losses after iteration %i: %s" % (itn, str(losses)))
print("Current dropout rate: %.2f" % (next(dropout)))
# Add the current loss to the list of losses, so we can plot it later
lossesList.append(int(losses['ner']))
# AFTER EACH ITERATION WE WANT TO VALIDATE THE DATA AND GET SOME RESULTS
if validation_data is not None:
random.shuffle(validation_data)
metrics = spacyEvaluate(ner_model=nlp,
examples=validation_data)
print(
"Metrics after iteration %i: PRECISION: %.2f%% | RECALL: %.2f%% | F1SCORE: %.2f%% |"
% (itn, metrics['precision'], metrics['recall'],
metrics['f1score']))
for key, value in metricsLocal.items():
metricsLocal[key].append(metrics[key])
# SAVE THE MODEL
if output_dir is not None:
print("Spacy model: Saving the model in the output directory: \"%s\"" %
(str(output_dir)))
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.meta["name"] = new_model_name
nlp.to_disk(output_dir)
print("Spacy model: saved successfully.")
return nlp, lossesList, metricsLocal
def train(model, train_data, dev_data, test_data, output_dir, n_iter,
meta_overrides):
"""Load the model, set up the pipeline and train the entity recognizer."""
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded model '%s'" % model)
else:
nlp = spacy.blank('en') # create blank Language class
print("Created blank 'en' model")
if meta_overrides is not None:
metadata = json.load(open(meta_overrides))
nlp.meta.update(metadata)
original_tokenizer = nlp.tokenizer
nlp.tokenizer = WhitespaceTokenizer(nlp.vocab)
# create the built-in pipeline components and add them to the pipeline
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'ner' not in nlp.pipe_names and "parser" in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner, after="parser")
elif 'ner' not in nlp.pipe_names and "tagger" in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner, after="tagger")
elif 'ner' not in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner, last=True)
# otherwise, get it so we can add labels
else:
ner = nlp.get_pipe('ner')
# add labels
for _, annotations in train_data:
for ent in annotations.get('entities'):
ner.add_label(ent[2])
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'ner']
dropout_rates = util.decaying(util.env_opt('dropout_from', 0.2),
util.env_opt('dropout_to', 0.2),
util.env_opt('dropout_decay', 0.005))
batch_sizes = util.compounding(util.env_opt('batch_from', 1),
util.env_opt('batch_to', 32),
util.env_opt('batch_compound', 1.001))
with nlp.disable_pipes(*other_pipes):
optimizer = nlp.begin_training()
best_epoch = 0
best_f1 = 0
for i in range(n_iter):
random.shuffle(train_data)
count = 0
losses = {}
total = len(train_data)
with nlp.disable_pipes(*other_pipes): # only train NER
with tqdm.tqdm(total=total, leave=True) as pbar:
for batch in minibatch(train_data, size=batch_sizes):
docs, golds = zip(*batch)
nlp.update(docs,
golds,
sgd=optimizer,
losses=losses,
drop=next(dropout_rates))
pbar.update(len(batch))
if count % 100 == 0 and count > 0:
print('sum loss: %s' % losses['ner'])
count += 1
# save model to output directory
output_dir_path = Path(output_dir + "/" + str(i))
if not output_dir_path.exists():
output_dir_path.mkdir()
with nlp.use_params(optimizer.averages):
nlp.tokenizer = original_tokenizer
nlp.to_disk(output_dir_path)
print("Saved model to", output_dir_path)
# test the saved model
print("Loading from", output_dir_path)
nlp2 = util.load_model_from_path(output_dir_path)
nlp2.tokenizer = WhitespaceTokenizer(nlp.vocab)
metrics = evaluate_ner(nlp2, dev_data)
if metrics["f1-measure-overall"] > best_f1:
best_f1 = metrics["f1-measure-overall"]
best_epoch = i
# save model to output directory
best_model_path = Path(output_dir + "/" + "best")
print(f"Best Epoch: {best_epoch} of {n_iter}")
if os.path.exists(best_model_path):
shutil.rmtree(best_model_path)
shutil.copytree(os.path.join(output_dir, str(best_epoch)), best_model_path)
# test the saved model
print("Loading from", best_model_path)
nlp2 = util.load_model_from_path(best_model_path)
nlp2.tokenizer = WhitespaceTokenizer(nlp.vocab)
evaluate_ner(nlp2,
dev_data,
dump_path=os.path.join(output_dir, "dev_metrics.json"))
evaluate_ner(nlp2,
test_data,
dump_path=os.path.join(output_dir, "test_metrics.json"))
Created on Sat Sep 1 11:26:50 2018
@author: Gurunath
"""
from __future__ import unicode_literals, print_function
import plac
import random
import pandas as pd
from pathlib import Path
import thinc.extra.datasets
import spacy
from spacy.util import minibatch, compounding
from spacy.util import decaying
dropout = decaying(0.6, 0.2, 1e-4)
tweet_df = pd.read_csv(
r'F:\E\Learning_DL_fastai\competition\NLP_data\train_2kmZucJ.csv')
def get_batches(train_data, model_type):
max_batch_sizes = {'tagger': 32, 'parser': 16, 'ner': 16, 'textcat': 64}
max_batch_size = max_batch_sizes[model_type]
if len(train_data) < 1000:
max_batch_size /= 2
if len(train_data) < 500:
max_batch_size /= 2
batch_size = compounding(1, max_batch_size, 1.001)
batches = minibatch(train_data, size=batch_size)
return batches
def train(model=None, output_dir=None, n_iter=20, n_texts=2000, categories=[], train_texts=[], train_cats=[], dev_texts=[], dev_cats=[]):
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded model '%s'" % model)
else:
nlp = spacy.blank('en') # create blank Language class
print("Created blank 'en' model")
# add the text classifier to the pipeline if it doesn't exist
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'textcat' not in nlp.pipe_names:
textcat = nlp.create_pipe('textcat')
nlp.add_pipe(textcat, last=True)
# otherwise, get it, so we can add labels to it
else:
textcat = nlp.get_pipe('textcat')
# add label to text classifier
#categories = ['greet', 'time', 'direction', 'self-location', 'location', 'search-general',
#'search-restaurants', 'affirmation', 'negation', 'launch', 'news', 'shut-down',
#'compliment', 'search-wikipedia']
for category in categories:
textcat.add_label(category)
# load the IMDB dataset
print("Loading categorisation data...")
#(train_texts, train_cats), (dev_texts, dev_cats) = load_data(categories, limit=n_texts)
print("Using {} examples ({} training, {} evaluation)"
.format(n_texts, len(train_texts), len(dev_texts)))
train_data = list(zip(train_texts,
[{'cats': cats} for cats in train_cats]))
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'textcat']
with nlp.disable_pipes(*other_pipes): # only train textcat
optimizer = nlp.begin_training()
print("Training the model...")
print('{:^5}\t{:^5}\t{:^5}\t{:^5}\t{:^5}'.format('Iter #', 'LOSS', 'P', 'R', 'F'))
for i in range(n_iter):
losses = {}
# batch up the examples using spaCy's minibatch
#batches = get_batches(train_data, 'textcat')
batches = minibatch(train_data, size=compounding(4., 32., 1.001))
dropout = decaying(0.6, 0.2, 1e-4)
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts, annotations, sgd=optimizer, drop=0.2,
losses=losses)
with textcat.model.use_params(optimizer.averages):
# evaluate on the dev data split off in load_data()
scores = evaluate(nlp.tokenizer, textcat, dev_texts, dev_cats)
print('{0}\t{1:.3f}\t{2:.3f}\t{3:.3f}\t{4:.3f}' # print a simple table
.format(i, losses['textcat'], scores['textcat_p'],
scores['textcat_r'], scores['textcat_f']))
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.to_disk(output_dir)
print("Saved model to", output_dir)
textcat = nlp_model.create_pipe('textcat')
nlp_model.add_pipe(textcat, last=True)
# add label to text classifier
for custom_label in [
"toxic", "severe_toxic", "obscene", "threat", "insult",
"identity_hate"
]: # Enter custom labels here <---------------------
textcat.add_label(custom_label)
# otherwise, get it, so we can add labels to it
else:
print('model already contains textcat!')
textcat = nlp_model.get_pipe('textcat')
optimizer = textcat.begin_training()
dropout = decaying(drop_max, drop_min, drop_step)
# store for evaluation
precisions = list()
recalls = list()
f_scores = list()
loss_vals = list()
data_pds = pd.read_csv(nrows=n_texts,
filepath_or_buffer=data_filepath,
chunksize=chunk_size,
header=0,
names=[
"id", "comment_text", "toxic", "severe_toxic",
"obscene", "threat", "insult", "identity_hate"
])
def main(model=None, output_dir=None, n_iter=20, n_texts=2000):
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded model '%s'" % model)
else:
nlp = spacy.blank('en') # create blank Language class
print("Created blank 'en' model")
# add the text classifier to the pipeline if it doesn't exist
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'textcat' not in nlp.pipe_names:
textcat = nlp.create_pipe('textcat')
nlp.add_pipe(textcat, last=True)
# otherwise, get it, so we can add labels to it
else:
textcat = nlp.get_pipe('textcat')
# add label to text classifier
textcat.add_label('Neutral')
textcat.add_label('Bullish')
textcat.add_label('Bearish')
# load the IMDB dataset
print("Loading tweets data...")
# (train_texts, train_cats), (dev_texts, dev_cats) = load_data(limit=n_texts)
(train_texts, train_cats), (dev_texts,
dev_cats) = load_data_2(limit=n_texts)
print("Using {} examples ({} training, {} evaluation)".format(
n_texts * 2, len(train_texts), len(dev_texts)))
train_data = list(zip(train_texts, [{
'cats': cats
} for cats in train_cats]))
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'textcat']
dropout = decaying(0.6, 0.2, 1e-4)
with nlp.disable_pipes(*other_pipes): # only train textcat
optimizer = nlp.begin_training()
print("Training the model...")
print('{:^5}\t{:^5}\t{:^5}\t{:^5}'.format('LOSS', 'P', 'R', 'F'))
for i in range(n_iter):
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(train_data, size=compounding(2., 8., 1.001))
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=next(dropout),
losses=losses)
with textcat.model.use_params(optimizer.averages):
# evaluate on the dev data split off in load_data()
try:
scores = evaluate(nlp.tokenizer, textcat, dev_texts,
dev_cats)
print(
'{0:.3f}\t{1:.3f}\t{2:.3f}\t{3:.3f}' # print a simple table
.format(losses['textcat'], scores['textcat_p'],
scores['textcat_r'], scores['textcat_f']))
except Exception as e:
print(e)
pass
# test the trained model
test_text = "#aapl buy for 250m the market!!!"
doc = nlp(test_text)
print(test_text, doc.cats)
if output_dir is None:
output_dir = Path('tweetsClassifier/spacyTrainingModel')
if not output_dir.exists():
output_dir.mkdir()
with nlp.use_params(optimizer.averages):
nlp.to_disk(output_dir)
print("Saved model to", output_dir)
# test the saved model
print("Loading from", output_dir)
test_text = "long #aapl for 250m the market!!!"
test_text2 = "#aapl lead the market!"
nlp2 = spacy.load(output_dir)
doc2 = nlp2(test_text)
print(test_text, doc2.cats)
def train_spacy(data, iterations):
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded model '%s'" % model)
else:
nlp = spacy.blank("id") # create blank Language class
print("Created blank 'indo' model")
TRAIN_DATA = data
# create the built-in pipeline components and add them to the pipeline
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'ner' not in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner, last=True)
else:
ner = nlp.get_pipe("ner")
# add labels
for _, annotations in TRAIN_DATA:
for ent in annotations.get('entities'):
ner.add_label(ent[2])
if model is None:
optimizer = nlp.begin_training()
# For training with customized cfg
# nlp.entity.cfg['conv_depth'] = 16
# nlp.entity.cfg['token_vector_width'] = 256
# nlp.entity.cfg['bilstm_depth'] = 1
# nlp.entity.cfg['beam_width'] = 2
else:
print("resuming")
optimizer = nlp.resume_training()
print(optimizer.learn_rate)
# get names of other pipes to disable them during training
pipe_exceptions = ["ner", "trf_wordpiecer", "trf_tok2vec"]
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'ner']
dropout = decaying(0.8, 0.2, 1e-6) # minimum, max, decay rate
# sizes = compounding(1.0, 4.0, 1.001)
sizes = compounding(4., 32., 1.001)
with nlp.disable_pipes(*other_pipes): # only train NER
warnings.filterwarnings("once", category=UserWarning, module='spacy')
optimizer.learn_rate = 0.001
for itn in range(iterations):
file = open(outlog_txt, 'a') # For logging losses of iterations
start = time.time() # Iteration Time
if itn % 100 == 0 and itn != 0:
# print("Itn : " + str(itn), time.time() - start_training_time)
# print('Testing')
# results = evaluate(nlp, TEST_DATA)
# file1 = open(outlog_file, 'a')
# file1.write(str(itn) + ',' + str(results['ents_p']) + ',' + str(results['ents_r']) + ',' + str(
# results['ents_f']) + ',' + str(results["ents_per_type"]) + "\n")
# file1.close()
# results = evaluate(nlp, TRAIN_DATA)
# file2 = open(train_file, 'a')
# file2.write(str(itn) + ',' + str(results['ents_p']) + ',' + str(results['ents_r']) + ',' + str(
# results['ents_f']) + ',' + str(results["ents_per_type"]) + "\n")
# file2.close()
#todo check point
modelfile = output_dir + "training_model" + str(itn)
nlp.to_disk(modelfile)
# Reducing Learning rate after certain operations
if itn == 100:
optimizer.learn_rate = 0.0005
if itn == 150:
optimizer.learn_rate = 0.0001
print("Statring iteration " + str(itn))
random.shuffle(TRAIN_DATA)
losses = {}
# use either batches or entire set at once
##### For training in Batches
batches = minibatch(TRAIN_DATA[:int(len(TRAIN_DATA) * 1)],
size=sizes)
for batch in batches:
texts, annotations = zip(*batch)
# nlp.update(texts, annotations, sgd=optimizer, drop=next(dropout), losses=losses)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=0.3,
losses=losses)
###########################################
##### For training in as a single iteration
# for text, annotations in TRAIN_DATA:
# nlp.update(
# [text], # batch of texts
# [annotations], # batch of annotations
# drop=0.2, # dropout - make it harder to memorise data
# # drop=next(dropout), Incase you are using decaying drop
# sgd=optimizer, # callable to update weights
# losses=losses)
print("Losses", losses)
file.write(str(itn) + "," + str(losses['ner']) + "\n")
print("time for iteration:", time.time() - start)
file.close()
return nlp
def train_textcat_model(
load_data_func: Callable[
[], Tuple[List[Tuple[Any, Dict[str, Dict[str, bool]]]], List[Tuple[Any, Dict[str, Dict[str, bool]]]]]
],
n_iter: int = 20, max_texts: int = 2000, model: Optional[str] = None,
output_dir: str = '/tmp/model', labels: Optional[Iterable[str]] = None,
test_text: Optional[str] = None
) -> None:
# Load data and verify there is some
train_data, eval_data = load_data_func()
if not train_data:
raise Exception('There is no data provided to train')
if not eval_data:
raise Exception('There is no data provided to evaluate the trained model')
if not labels:
raise Exception('No labels were provided to train')
if not output_dir:
raise Exception('Output dir must be specified')
if model:
nlp = spacy.load(model)
print(f'Loaded model "{model}"')
else:
nlp = spacy.blank("en")
print('Created blank "en" model')
# Add the text classifier to the pipeline if it doesn't exist
if 'textcat' not in nlp.pipe_names:
# nlp.create_pipe works for built-ins that are registered with spaCy
textcat = nlp.create_pipe(
'textcat', config={'exclusive_classes': True, 'architecture': 'simple_cnn'}
)
nlp.add_pipe(textcat, last=True)
else:
# Otherwise, get it, so we can add labels to it
textcat = nlp.get_pipe('textcat')
# Add labels to text classifier
for label in labels:
textcat.add_label(label)
print(
"Using max {} examples ({} training, {} evaluation)".format(
max_texts, len(train_data), len(eval_data)
)
)
# We mainly have small data sets, so it's recommended to use a high dropout rate at first
# From https://spacy.io/usage/training#tips-dropout
dropout = decaying(0.6, 0.2, 1e-4)
# Get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "textcat"]
with nlp.disable_pipes(*other_pipes):
optimizer = nlp.begin_training()
print('Training the model...')
print('{:^5}\t{:^5}\t{:^5}\t{:^5}'.format("LOSS", "P", "R", "F"))
batch_sizes = compounding(4.0, 32.0, 1.001)
for i in range(n_iter):
losses = {}
# batch up the examples using spaCy's minibatch
random.shuffle(train_data)
batches = minibatch(train_data, size=batch_sizes)
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts, annotations, sgd=optimizer, drop=next(dropout), losses=losses)
with textcat.model.use_params(optimizer.averages):
# evaluate on the dev data split off in load_data()
scores = _evaluate(nlp.tokenizer, textcat, eval_data)
# Print a simple table
print(
"{0:.3f}\t{1:.3f}\t{2:.3f}\t{3:.3f}".format(
losses["textcat"],
scores["textcat_p"],
scores["textcat_r"],
scores["textcat_f"],
)
)
# Create the output dir (if it doesn't exist
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
# Use the averages when writing out the model
# From https://spacy.io/usage/training#tips-param-avg
with nlp.use_params(optimizer.averages):
nlp.to_disk(output_dir)
print(f'Saved model to {output_dir}')
# test the saved model
if test_text:
print(f'Loading saved model from {output_dir}')
test_textcat_model(output_dir, test_text)
def custom_train(
lang,
output_path,
train_path,
dev_path,
raw_text=None,
base_model=None,
pipeline="tagger,parser,ner",
vectors=None,
n_iter=30,
n_early_stopping=None,
n_examples=0,
use_gpu=-1,
version="0.0.0",
meta_path=None,
init_tok2vec=None,
parser_multitasks="",
entity_multitasks="",
noise_level=0.0,
orth_variant_level=0.0,
eval_beam_widths="",
gold_preproc=False,
learn_tokens=False,
textcat_multilabel=False,
textcat_arch="bow",
textcat_positive_label=None,
verbose=False,
debug=False,
):
"""
Train or update a spaCy model. Requires data to be formatted in spaCy's
JSON format. To convert data from other formats, use the `spacy convert`
command.
"""
# temp fix to avoid import issues cf https://github.com/explosion/spaCy/issues/4200
import tqdm
msg = Printer()
util.fix_random_seed()
util.set_env_log(verbose)
# Make sure all files and paths exists if they are needed
train_path = util.ensure_path(train_path)
dev_path = util.ensure_path(dev_path)
meta_path = util.ensure_path(meta_path)
output_path = util.ensure_path(output_path)
if raw_text is not None:
raw_text = list(srsly.read_jsonl(raw_text))
if not train_path or not train_path.exists():
msg.fail("Training data not found", train_path, exits=1)
if not dev_path or not dev_path.exists():
msg.fail("Development data not found", dev_path, exits=1)
if meta_path is not None and not meta_path.exists():
msg.fail("Can't find model meta.json", meta_path, exits=1)
meta = srsly.read_json(meta_path) if meta_path else {}
if output_path.exists() and [
p for p in output_path.iterdir() if p.is_dir()
]:
msg.warn(
"Output directory is not empty",
"This can lead to unintended side effects when saving the model. "
"Please use an empty directory or a different path instead. If "
"the specified output path doesn't exist, the directory will be "
"created for you.",
)
if not output_path.exists():
output_path.mkdir()
# Take dropout and batch size as generators of values -- dropout
# starts high and decays sharply, to force the optimizer to explore.
# Batch size starts at 1 and grows, so that we make updates quickly
# at the beginning of training.
dropout_rates = util.decaying(
util.env_opt("dropout_from", 0.2),
util.env_opt("dropout_to", 0.2),
util.env_opt("dropout_decay", 0.0),
)
batch_sizes = util.compounding(
util.env_opt("batch_from", 100.0),
util.env_opt("batch_to", 1000.0),
util.env_opt("batch_compound", 1.001),
)
if not eval_beam_widths:
eval_beam_widths = [1]
else:
eval_beam_widths = [int(bw) for bw in eval_beam_widths.split(",")]
if 1 not in eval_beam_widths:
eval_beam_widths.append(1)
eval_beam_widths.sort()
has_beam_widths = eval_beam_widths != [1]
# Set up the base model and pipeline. If a base model is specified, load
# the model and make sure the pipeline matches the pipeline setting. If
# training starts from a blank model, intitalize the language class.
pipeline = [p.strip() for p in pipeline.split(",")]
msg.text("Training pipeline: {}".format(pipeline))
if base_model:
msg.text("Starting with base model '{}'".format(base_model))
nlp = util.load_model(base_model)
if nlp.lang != lang:
msg.fail(
"Model language ('{}') doesn't match language specified as "
"`lang` argument ('{}') ".format(nlp.lang, lang),
exits=1,
)
nlp.disable_pipes([p for p in nlp.pipe_names if p not in pipeline])
for pipe in pipeline:
if pipe not in nlp.pipe_names:
if pipe == "parser":
pipe_cfg = {"learn_tokens": learn_tokens}
elif pipe == "textcat":
pipe_cfg = {
"exclusive_classes": not textcat_multilabel,
"architecture": textcat_arch,
"positive_label": textcat_positive_label,
}
else:
pipe_cfg = {}
nlp.add_pipe(nlp.create_pipe(pipe, config=pipe_cfg))
else:
if pipe == "textcat":
textcat_cfg = nlp.get_pipe("textcat").cfg
base_cfg = {
"exclusive_classes": textcat_cfg["exclusive_classes"],
"architecture": textcat_cfg["architecture"],
"positive_label": textcat_cfg["positive_label"],
}
pipe_cfg = {
"exclusive_classes": not textcat_multilabel,
"architecture": textcat_arch,
"positive_label": textcat_positive_label,
}
if base_cfg != pipe_cfg:
msg.fail(
"The base textcat model configuration does"
"not match the provided training options. "
"Existing cfg: {}, provided cfg: {}".format(
base_cfg, pipe_cfg),
exits=1,
)
else:
msg.text("Starting with blank model '{}'".format(lang))
lang_cls = util.get_lang_class(lang)
### Here are our modifications:
lang_cls.Defaults.tag_map = custom_tag_map
nlp = lang_cls()
assert nlp.vocab.morphology.n_tags == 36
###
for pipe in pipeline:
if pipe == "parser":
pipe_cfg = {"learn_tokens": learn_tokens}
elif pipe == "textcat":
pipe_cfg = {
"exclusive_classes": not textcat_multilabel,
"architecture": textcat_arch,
"positive_label": textcat_positive_label,
}
else:
pipe_cfg = {}
nlp.add_pipe(nlp.create_pipe(pipe, config=pipe_cfg))
if vectors:
msg.text("Loading vector from model '{}'".format(vectors))
_load_vectors(nlp, vectors)
# Multitask objectives
multitask_options = [("parser", parser_multitasks),
("ner", entity_multitasks)]
for pipe_name, multitasks in multitask_options:
if multitasks:
if pipe_name not in pipeline:
msg.fail("Can't use multitask objective without '{}' in the "
"pipeline".format(pipe_name))
pipe = nlp.get_pipe(pipe_name)
for objective in multitasks.split(","):
pipe.add_multitask_objective(objective)
# Prepare training corpus
msg.text("Counting training words (limit={})".format(n_examples))
corpus = GoldCorpus(train_path, dev_path, limit=n_examples)
n_train_words = corpus.count_train()
if base_model:
# Start with an existing model, use default optimizer
optimizer = create_default_optimizer(Model.ops)
else:
# Start with a blank model, call begin_training
optimizer = nlp.begin_training(lambda: corpus.train_tuples,
device=use_gpu)
nlp._optimizer = None
# Load in pretrained weights
if init_tok2vec is not None:
components = _load_pretrained_tok2vec(nlp, init_tok2vec)
msg.text("Loaded pretrained tok2vec for: {}".format(components))
# Verify textcat config
if "textcat" in pipeline:
textcat_labels = nlp.get_pipe("textcat").cfg["labels"]
if textcat_positive_label and textcat_positive_label not in textcat_labels:
msg.fail(
"The textcat_positive_label (tpl) '{}' does not match any "
"label in the training data.".format(textcat_positive_label),
exits=1,
)
if textcat_positive_label and len(textcat_labels) != 2:
msg.fail(
"A textcat_positive_label (tpl) '{}' was provided for training "
"data that does not appear to be a binary classification "
"problem with two labels.".format(textcat_positive_label),
exits=1,
)
train_docs = corpus.train_docs(
nlp,
noise_level=noise_level,
gold_preproc=gold_preproc,
max_length=0,
ignore_misaligned=True,
)
train_labels = set()
if textcat_multilabel:
multilabel_found = False
for text, gold in train_docs:
train_labels.update(gold.cats.keys())
if list(gold.cats.values()).count(1.0) != 1:
multilabel_found = True
if not multilabel_found and not base_model:
msg.warn("The textcat training instances look like they have "
"mutually-exclusive classes. Remove the flag "
"'--textcat-multilabel' to train a classifier with "
"mutually-exclusive classes.")
if not textcat_multilabel:
for text, gold in train_docs:
train_labels.update(gold.cats.keys())
if list(gold.cats.values()).count(1.0) != 1 and not base_model:
msg.warn(
"Some textcat training instances do not have exactly "
"one positive label. Modifying training options to "
"include the flag '--textcat-multilabel' for classes "
"that are not mutually exclusive.")
nlp.get_pipe("textcat").cfg["exclusive_classes"] = False
textcat_multilabel = True
break
if base_model and set(textcat_labels) != train_labels:
msg.fail(
"Cannot extend textcat model using data with different "
"labels. Base model labels: {}, training data labels: "
"{}.".format(textcat_labels, list(train_labels)),
exits=1,
)
if textcat_multilabel:
msg.text(
"Textcat evaluation score: ROC AUC score macro-averaged across "
"the labels '{}'".format(", ".join(textcat_labels)))
elif textcat_positive_label and len(textcat_labels) == 2:
msg.text("Textcat evaluation score: F1-score for the "
"label '{}'".format(textcat_positive_label))
elif len(textcat_labels) > 1:
if len(textcat_labels) == 2:
msg.warn(
"If the textcat component is a binary classifier with "
"exclusive classes, provide '--textcat_positive_label' for "
"an evaluation on the positive class.")
msg.text(
"Textcat evaluation score: F1-score macro-averaged across "
"the labels '{}'".format(", ".join(textcat_labels)))
else:
msg.fail(
"Unsupported textcat configuration. Use `spacy debug-data` "
"for more information.")
# fmt: off
row_head, output_stats = _configure_training_output(
pipeline, use_gpu, has_beam_widths)
row_widths = [len(w) for w in row_head]
row_settings = {
"widths": row_widths,
"aligns": tuple(["r" for i in row_head]),
"spacing": 2
}
# fmt: on
print("")
msg.row(row_head, **row_settings)
msg.row(["-" * width for width in row_settings["widths"]], **row_settings)
try:
iter_since_best = 0
best_score = 0.0
for i in range(n_iter):
train_docs = corpus.train_docs(
nlp,
noise_level=noise_level,
orth_variant_level=orth_variant_level,
gold_preproc=gold_preproc,
max_length=0,
ignore_misaligned=True,
)
if raw_text:
random.shuffle(raw_text)
raw_batches = util.minibatch(
(nlp.make_doc(rt["text"]) for rt in raw_text), size=8)
words_seen = 0
with tqdm.tqdm(total=n_train_words, leave=False) as pbar:
losses = {}
for batch in util.minibatch_by_words(train_docs,
size=batch_sizes):
if not batch:
continue
docs, golds = zip(*batch)
nlp.update(
docs,
golds,
sgd=optimizer,
drop=next(dropout_rates),
losses=losses,
)
if raw_text:
# If raw text is available, perform 'rehearsal' updates,
# which use unlabelled data to reduce overfitting.
raw_batch = list(next(raw_batches))
nlp.rehearse(raw_batch, sgd=optimizer, losses=losses)
if not int(os.environ.get("LOG_FRIENDLY", 0)):
pbar.update(sum(len(doc) for doc in docs))
words_seen += sum(len(doc) for doc in docs)
with nlp.use_params(optimizer.averages):
util.set_env_log(False)
epoch_model_path = output_path / ("model%d" % i)
nlp.to_disk(epoch_model_path)
nlp_loaded = util.load_model_from_path(epoch_model_path)
for beam_width in eval_beam_widths:
for name, component in nlp_loaded.pipeline:
if hasattr(component, "cfg"):
component.cfg["beam_width"] = beam_width
dev_docs = list(
corpus.dev_docs(
nlp_loaded,
gold_preproc=gold_preproc,
ignore_misaligned=True,
))
nwords = sum(len(doc_gold[0]) for doc_gold in dev_docs)
start_time = timer()
scorer = nlp_loaded.evaluate(dev_docs, verbose=verbose)
end_time = timer()
if use_gpu < 0:
gpu_wps = None
cpu_wps = nwords / (end_time - start_time)
else:
gpu_wps = nwords / (end_time - start_time)
with Model.use_device("cpu"):
nlp_loaded = util.load_model_from_path(
epoch_model_path)
for name, component in nlp_loaded.pipeline:
if hasattr(component, "cfg"):
component.cfg["beam_width"] = beam_width
dev_docs = list(
corpus.dev_docs(
nlp_loaded,
gold_preproc=gold_preproc,
ignore_misaligned=True,
))
start_time = timer()
scorer = nlp_loaded.evaluate(dev_docs,
verbose=verbose)
end_time = timer()
cpu_wps = nwords / (end_time - start_time)
acc_loc = output_path / ("model%d" % i) / "accuracy.json"
srsly.write_json(acc_loc, scorer.scores)
# Update model meta.json
meta["lang"] = nlp.lang
meta["pipeline"] = nlp.pipe_names
meta["spacy_version"] = ">=%s" % about.__version__
if beam_width == 1:
meta["speed"] = {
"nwords": nwords,
"cpu": cpu_wps,
"gpu": gpu_wps,
}
meta["accuracy"] = scorer.scores
else:
meta.setdefault("beam_accuracy", {})
meta.setdefault("beam_speed", {})
meta["beam_accuracy"][beam_width] = scorer.scores
meta["beam_speed"][beam_width] = {
"nwords": nwords,
"cpu": cpu_wps,
"gpu": gpu_wps,
}
meta["vectors"] = {
"width": nlp.vocab.vectors_length,
"vectors": len(nlp.vocab.vectors),
"keys": nlp.vocab.vectors.n_keys,
"name": nlp.vocab.vectors.name,
}
meta.setdefault("name", "model%d" % i)
meta.setdefault("version", version)
meta["labels"] = nlp.meta["labels"]
meta_loc = output_path / ("model%d" % i) / "meta.json"
srsly.write_json(meta_loc, meta)
util.set_env_log(verbose)
progress = _get_progress(
i,
losses,
scorer.scores,
output_stats,
beam_width=beam_width if has_beam_widths else None,
cpu_wps=cpu_wps,
gpu_wps=gpu_wps,
)
if i == 0 and "textcat" in pipeline:
textcats_per_cat = scorer.scores.get(
"textcats_per_cat", {})
for cat, cat_score in textcats_per_cat.items():
if cat_score.get("roc_auc_score", 0) < 0:
msg.warn(
"Textcat ROC AUC score is undefined due to "
"only one value in label '{}'.".format(
cat))
msg.row(progress, **row_settings)
# Early stopping
if n_early_stopping is not None:
current_score = _score_for_model(meta)
if current_score < best_score:
iter_since_best += 1
else:
iter_since_best = 0
best_score = current_score
if iter_since_best >= n_early_stopping:
msg.text("Early stopping, best iteration "
"is: {}".format(i - iter_since_best))
msg.text("Best score = {}; Final iteration "
"score = {}".format(best_score,
current_score))
break
finally:
with nlp.use_params(optimizer.averages):
final_model_path = output_path / "model-final"
nlp.to_disk(final_model_path)
msg.good("Saved model to output directory", final_model_path)
with msg.loading("Creating best model..."):
best_model_path = _collate_best_model(meta, output_path,
nlp.pipe_names)
msg.good("Created best model", best_model_path)
def update(self):
'''
Using spacy V2.1 to update the dependency parser
'''
dropout = decaying(0.5, 0.2, 1e-4)
self.require_gpu(self.gpu)
# getting data in spacy required format
data = self.get_data(self.train_path)
random.seed(777)
random.shuffle(data)
if self.model is not None:
nlp = spacy.load(self.model) # load existing spaCy model
print("Loaded model '%s'" % self.model)
else:
nlp = spacy.blank(self.lang) # create blank Language class
print("Created blank '%s' model" % self.lang)
# add the parser to the pipeline if it doesn't exist
# nlp.create_pipe works for built-ins that are registered with spaCy
if "parser" not in nlp.pipe_names:
parser = nlp.create_pipe("parser")
nlp.add_pipe(parser, first=True)
# otherwise, get it, so we can add labels to it
else:
parser = nlp.get_pipe("parser")
# sentence segmentation diable
#nlp.add_pipe(self.prevent_sentence_boundary_detection, name='prevent-sbd', before='parser')
# change the tokens to spacy Doc
new_data = list()
for dat in data:
assert (len(Doc(nlp.vocab, words=dat[0])) == len(dat[1]['deps']))
assert (len(Doc(nlp.vocab, words=dat[0])) == len(dat[1]['heads']))
doc = Doc(nlp.vocab, words=dat[0])
new_data.append(
(doc, GoldParse(doc,
heads=dat[1]['heads'],
deps=dat[1]['deps'])))
# add labels to the parser
for _, annotations in data:
for dep in annotations.get("deps", []):
parser.add_label(dep)
pretrain_weights_path = os.path.join(os.path.dirname(os.path.realpath(__file__)),\
'pretrained_weights','pretrained_weights.bin')
if os.path.exists(pretrain_weights_path):
# loading pretrained weights
with open(pretrain_weights_path, "rb") as file_:
nlp.from_bytes(file_.read())
print('LOADED from PRETRAIN %s' % pretrain_weights_path)
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "parser"]
with nlp.disable_pipes(*other_pipes): # only train parser
optimizer = nlp.begin_training()
for itn in range(self.n_iter):
random.shuffle(new_data)
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(new_data,
size=compounding(4.0, 32.0, 1.001))
for batch in batches:
texts, annotations = zip(*batch)
print(type(texts[0]))
print(annotations[0])
nlp.update(texts,
annotations,
sgd=optimizer,
losses=losses,
drop=next(dropout))
print("Losses", losses)
# save model to output directory
if self.output_dir is not None:
self.output_dir = Path(self.output_dir)
if not self.output_dir.exists():
self.output_dir.mkdir()
nlp.meta['name'] = "Custom-launguage-model" # rename model
with nlp.use_params(optimizer.averages):
nlp.to_disk(self.output_dir)
print("Saved model to", self.output_dir)
def train_intent(self, nlp, output_dir, train_data, n_iter, dropout):
"""Load the model, set up the pipeline and train the entity recognizer.
Keyword arguments:
model -- path to the model if existent
output_dir -- path where model is saved at
n_iter -- amount of times data is trained with
train_data -- training data in BILOU Format
Returns:
output_dir -- path to model
"""
dropout = decaying(0.6, 0.2, 1e-4)
pipe_exceptions = ["trf_textcat", "trf_wordpiecer", "trf_tok2vec"]
other_pipes = [
pipe for pipe in nlp.pipe_names if pipe not in pipe_exceptions
]
disabled = nlp.disable_pipes(*other_pipes)
logging.info("Started training intents...")
optimizer = nlp.resume_training()
optimizer.alpha = 0.001
optimizer.trf_weight_decay = 0.005
optimizer.L2 = 0.0
learn_rate = 2e-5
batch_size = 8
learn_rates = cyclic_triangular_rate(learn_rate / 3, learn_rate * 3,
2 * len(train_data) // batch_size)
for iteration in range(n_iter):
random.shuffle(train_data)
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(train_data, size=compounding(4.0, 32.0, 1.001))
for batch in batches:
optimizer.trf_lr = next(learn_rates)
texts, _, annotations = zip(*batch)
nlp.update(
texts, # batch of texts
annotations, # batch of annotations
sgd=optimizer,
drop=next(
dropout), # dropout - make it harder to memorise data
losses=losses)
self.losses_cat.append(losses)
p, r, f = self.evaluate_intent(nlp)
self.cat_scores.append([p, r, f])
logging.info(
"Finished %s iteration for text classification with %s losses",
iteration, losses)
#if cat_score <= self.cat_scores[-2]:
#break
logging.info("Finished training intents...")
disabled.restore()
# save model to output directory
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.to_disk(output_dir)
logging.info("Saved model to %s", output_dir)
return output_dir
def train_parser_and_tagger(train_json_path: str,
dev_json_path: str,
test_json_path: str,
model_output_dir: str,
model_path: str = None,
ontonotes_path: str = None,
ontonotes_train_percent: float = 0.0):
"""Function to train the spacy parser and tagger from a blank model, with the default, en_core_web_sm vocab.
Training setup is mostly copied from the spacy cli train command.
@param train_json_path: path to the conll formatted training data
@param dev_json_path: path to the conll formatted dev data
@param test_json_path: path to the conll formatted test data
@param model_output_dir: path to the output directory for the trained models
@param model_path: path to the model to load
@param ontonotes_path: path to the directory containnig ontonotes in spacy format (optional)
@param ontonotes_train_percent: percentage of the ontonotes training data to use (optional)
"""
msg = Printer()
train_json_path = cached_path(train_json_path)
dev_json_path = cached_path(dev_json_path)
test_json_path = cached_path(test_json_path)
if model_path is not None:
nlp = spacy.load(model_path)
else:
lang_class = util.get_lang_class('en')
nlp = lang_class()
if 'tagger' not in nlp.pipe_names:
tagger = nlp.create_pipe('tagger')
nlp.add_pipe(tagger, first=True)
else:
tagger = nlp.get_pipe('tagger')
if 'parser' not in nlp.pipe_names:
parser = nlp.create_pipe('parser')
nlp.add_pipe(parser)
else:
parser = nlp.get_pipe('parser')
train_corpus = GoldCorpus(train_json_path, dev_json_path)
test_corpus = GoldCorpus(train_json_path, test_json_path)
if ontonotes_path:
onto_train_path = os.path.join(ontonotes_path, "train")
onto_dev_path = os.path.join(ontonotes_path, "dev")
onto_test_path = os.path.join(ontonotes_path, "test")
onto_train_corpus = GoldCorpus(onto_train_path, onto_dev_path)
onto_test_corpus = GoldCorpus(onto_train_path, onto_test_path)
dropout_rates = util.decaying(0.2, 0.2, 0.0)
batch_sizes = util.compounding(1., 16., 1.001)
if model_path is not None:
meta = nlp.meta
else:
meta = {}
meta["lang"] = "en"
meta["pipeline"] = ["tagger", "parser"]
meta["name"] = "scispacy_core_web_sm"
meta["license"] = "CC BY-SA 3.0"
meta["author"] = "Allen Institute for Artificial Intelligence"
meta["url"] = "allenai.org"
meta["sources"] = ["OntoNotes 5", "Common Crawl", "GENIA 1.0"]
meta["version"] = "1.0.0"
meta["spacy_version"] = ">=2.2.1"
meta["parent_package"] = "spacy"
meta["email"] = "*****@*****.**"
n_train_words = train_corpus.count_train()
other_pipes = [pipe for pipe in nlp.pipe_names if pipe not in ['tagger', 'parser']]
with nlp.disable_pipes(*other_pipes):
if ontonotes_path:
optimizer = nlp.begin_training(lambda: itertools.chain(train_corpus.train_tuples, onto_train_corpus.train_tuples))
else:
optimizer = nlp.begin_training(lambda: train_corpus.train_tuples)
nlp._optimizer = None
train_docs = train_corpus.train_docs(nlp)
train_docs = list(train_docs)
train_mixture = train_docs
if ontonotes_path:
onto_train_docs = onto_train_corpus.train_docs(nlp)
onto_train_docs = list(onto_train_docs)
num_onto_docs = int(float(ontonotes_train_percent)*len(onto_train_docs))
randomly_sampled_onto = random.sample(onto_train_docs, num_onto_docs)
train_mixture += randomly_sampled_onto
row_head, output_stats = _configure_training_output(nlp.pipe_names, -1, False)
row_widths = [len(w) for w in row_head]
row_settings = {"widths": row_widths, "aligns": tuple(["r" for i in row_head]), "spacing": 2}
print("")
msg.row(row_head, **row_settings)
msg.row(["-" * width for width in row_settings["widths"]], **row_settings)
best_epoch = 0
best_epoch_uas = 0.0
for i in range(20):
random.shuffle(train_mixture)
with nlp.disable_pipes(*other_pipes):
with tqdm(total=n_train_words, leave=False) as pbar:
losses = {}
minibatches = list(util.minibatch(train_docs, size=batch_sizes))
for batch in minibatches:
docs, golds = zip(*batch)
nlp.update(docs, golds, sgd=optimizer,
drop=next(dropout_rates), losses=losses)
pbar.update(sum(len(doc) for doc in docs))
# save intermediate model and output results on the dev set
with nlp.use_params(optimizer.averages):
epoch_model_path = os.path.join(model_output_dir, "model"+str(i))
os.makedirs(epoch_model_path, exist_ok=True)
nlp.to_disk(epoch_model_path)
with open(os.path.join(model_output_dir, "model"+str(i), "meta.json"), "w") as meta_fp:
meta_fp.write(json.dumps(meta))
nlp_loaded = util.load_model_from_path(epoch_model_path)
dev_docs = train_corpus.dev_docs(nlp_loaded)
dev_docs = list(dev_docs)
nwords = sum(len(doc_gold[0]) for doc_gold in dev_docs)
start_time = timer()
scorer = nlp_loaded.evaluate(dev_docs)
end_time = timer()
gpu_wps = None
cpu_wps = nwords/(end_time-start_time)
if ontonotes_path:
onto_dev_docs = list(onto_train_corpus.dev_docs(nlp_loaded))
onto_scorer = nlp_loaded.evaluate(onto_dev_docs)
if scorer.scores["uas"] > best_epoch_uas:
best_epoch_uas = scorer.scores["uas"]
best_epoch = i
progress = _get_progress(
i, losses, scorer.scores, output_stats, cpu_wps=cpu_wps, gpu_wps=gpu_wps
)
msg.row(progress, **row_settings)
if ontonotes_path:
progress = _get_progress(
i, losses, onto_scorer.scores, output_stats, cpu_wps=cpu_wps, gpu_wps=gpu_wps
)
msg.row(progress, **row_settings)
# save final model and output results on the test set
final_model_path = os.path.join(model_output_dir, "best")
if os.path.exists(final_model_path):
shutil.rmtree(final_model_path)
shutil.copytree(os.path.join(model_output_dir, "model" + str(best_epoch)),
final_model_path)
nlp_loaded = util.load_model_from_path(final_model_path)
start_time = timer()
test_docs = test_corpus.dev_docs(nlp_loaded)
test_docs = list(test_docs)
nwords = sum(len(doc_gold[0]) for doc_gold in test_docs)
scorer = nlp_loaded.evaluate(test_docs)
end_time = timer()
gpu_wps = None
cpu_wps = nwords/(end_time-start_time)
meta["speed"] = {"gpu": None, "nwords": nwords, "cpu": cpu_wps}
print("Retrained genia evaluation")
print("Test results:")
print("UAS:", scorer.uas)
print("LAS:", scorer.las)
print("Tag %:", scorer.tags_acc)
print("Token acc:", scorer.token_acc)
with open(os.path.join(model_output_dir, "genia_test.json"), "w+") as metric_file:
json.dump(scorer.scores, metric_file)
with open(os.path.join(model_output_dir, "best", "meta.json"), "w") as meta_fp:
meta_fp.write(json.dumps(meta))
if ontonotes_path:
onto_test_docs = list(onto_test_corpus.dev_docs(nlp_loaded))
print("Retrained ontonotes evaluation")
scorer_onto_retrained = nlp_loaded.evaluate(onto_test_docs)
print("Test results:")
print("UAS:", scorer_onto_retrained.uas)
print("LAS:", scorer_onto_retrained.las)
print("Tag %:", scorer_onto_retrained.tags_acc)
print("Token acc:", scorer_onto_retrained.token_acc)
with open(os.path.join(model_output_dir, "ontonotes_test.json"), "w+") as metric_file:
json.dump(scorer_onto_retrained.scores, metric_file)
def train_NER(model=None,
new_model_name="skill",
output_dir='./models/train_textrank_labels',
n_iter=5):
# model = None for starting with an empty model
# model = 'en_core_web_sm' for starting with a pretrained model
"""Set up the pipeline and entity recognizer, and train the new entity."""
random.seed(0)
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded model '%s'" % model)
else:
nlp = spacy.blank("en") # create blank Language class
print("Created blank 'en' model")
# Add entity recognizer to model if it's not in the pipeline
# nlp.create_pipe works for built-ins that are registered with spaCy
if "ner" not in nlp.pipe_names:
ner = nlp.create_pipe("ner")
nlp.add_pipe(ner)
# otherwise, get it, so we can add labels to it
else:
ner = nlp.get_pipe("ner")
ner.add_label('SKILL') # add new entity label to entity recognizer
if model is None:
optimizer = nlp.begin_training()
else:
optimizer = nlp.resume_training()
move_names = list(ner.move_names)
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "ner"]
with nlp.disable_pipes(*other_pipes): # only train NER
sizes = compounding(1.0, 4.0, 1.001)
# batch up the examples using spaCy's minibatch
dropout = decaying(0.2, 0, 0.02)
loss_dict = {}
for itn in range(n_iter):
random.shuffle(TRAIN_DATA)
batches = minibatch(TRAIN_DATA, size=sizes)
losses = {}
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=0.05,
losses=losses) # or drop=next(dropout)
loss_dict[itn] = losses['ner']
print("Losses", losses)
lists = sorted(loss_dict.items())
x, y = zip(*lists)
plt.plot(x, y)
plt.show()
# save model to output directory
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
nlp.meta["name"] = new_model_name # rename model
nlp.to_disk(output_dir)
print("Saved model to", output_dir)
def training(train_texts,
train_cats,
dev_texts,
dev_cats,
test_texts,
test_cats,
L2,
learn_rate,
n_iter,
output_dir=None):
"""
Spacy example function modified
Trains citation needed classifier and saves model
Parameters:
train_texts :str -list - text train features
train_cats :str - list - label citation sentence - TRUE else FALSE
dev_texts :str - list - text train features
dev_cats :str - list - label citation sentence - TRUE else FALSE
test_texts :str - list - text train features
test_cats :str - list - label citation sentence - TRUE else FALSE
L2 : int - regularization parameter - default value 1e-6
learn_rate : learning rate - default rate - 0.001,
output_dir :str = None - path to save the model
returns:
returns list of evaluated metrics (accuracy, f1, precision and recall)
train_results : list - evaluated metrics for training dataset
val_results : list - evaluated metrics for validation dataset
"""
if output_dir is not None:
output_dir = Path(output_dir)
if not output_dir.exists():
output_dir.mkdir()
# Disabling other components
nlp = spacy.load('en_core_web_sm')
# Adding the built-in textcat component to the pipeline.
textcat = nlp.create_pipe("textcat",
config={
"exclusive_classes": True,
"architecture": "simple_cnn"
})
nlp.add_pipe(textcat, last=True)
# Adding the labels to textcat
textcat.add_label("POSITIVE")
textcat.add_label("NEGATIVE")
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'textcat']
with nlp.disable_pipes(*other_pipes): # only train textcat
optimizer = nlp.begin_training()
optimizer.L2 = L2
optimizer.learn_rate = learn_rate
#dec = decaying(0.6, 0.2, 1e-4)
dec = decaying(10.0, 1.0, 0.001)
print("Training the model...")
print('{:^5}\t{:^5}\t{:^5}\t{:^5}\t{:^5}\t{:^5}\t{:^5}'.format(
'LOSS', 'A_train', 'A_dev', 'A_test', 'P', 'R', 'F'))
train_results = []
dev_results = []
test_results = []
# Performing training
for i in range(n_iter):
losses = {}
train_data = list(
zip(train_texts, [{
'cats': cats
} for cats in train_cats]))
random.shuffle(train_data)
# (train_texts, train_cats) = zip(*train_data)
batches = minibatch(train_data, size=compounding(4., 32., 1.001))
for batch in batches:
texts, annotations = zip(*batch)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=next(dec),
losses=losses)
# Calling the evaluate() function and printing the train scores
scores1 = evaluate(nlp.tokenizer, textcat, train_texts, train_cats)
train_results.append(scores1)
# Calling the evaluate() function and printing the test scores
with textcat.model.use_params(optimizer.averages):
scores2 = evaluate(nlp.tokenizer, textcat, dev_texts, dev_cats)
scores3 = evaluate(nlp.tokenizer, textcat, test_texts,
test_cats)
dev_results.append(scores2)
test_results.append(scores3)
print(
'{0:.4f}\t{1:.4f}\t{2:.4f}\t{3:.4f}\t{4:.4f}\t{5:.4f}\t{6:.4f}'
.format(losses['textcat'], scores1['textcat_a'],
scores2['textcat_a'], scores3['textcat_a'],
scores1['textcat_p'], scores1['textcat_r'],
scores1['textcat_f']))
if output_dir is not None:
with nlp.use_params(optimizer.averages):
nlp.to_disk(output_dir)
print("Saved model to", output_dir)
return train_results, dev_results, test_results
def train(pretrained,
output_dir,
train_data,
dev_data,
n_iter=30,
n_sents=0,
parser_multitasks='',
entity_multitasks='',
use_gpu=-1,
no_tagger=False,
no_parser=False,
no_entities=False,
gold_preproc=False,
version="0.0.0",
meta_path=None,
verbose=False):
"""
Re-train a pre-trained model. Expects data in spaCy's JSON
format. This code is based on
https://github.com/explosion/spaCy/blob/master/spacy/cli/train.py.
"""
# There is a bug that prevents me from using the GPU when resuming
# training from a saved model. See
# https://github.com/explosion/spaCy/issues/1806.
if use_gpu >= 0:
msg = "\nWARNING: using GPU may require re-installing thinc. "
msg += "See https://github.com/explosion/spaCy/issues/1806.\n"
print(msg)
util.fix_random_seed()
util.set_env_log(True)
n_sents = n_sents or None
output_path = util.ensure_path(output_dir)
train_path = util.ensure_path(train_data)
dev_path = util.ensure_path(dev_data)
meta_path = util.ensure_path(meta_path)
if not output_path.exists():
output_path.mkdir()
if not train_path.exists():
prints(train_path, title=Messages.M050, exits=1)
if dev_path and not dev_path.exists():
prints(dev_path, title=Messages.M051, exits=1)
if meta_path is not None and not meta_path.exists():
prints(meta_path, title=Messages.M020, exits=1)
meta = util.read_json(meta_path) if meta_path else {}
if not isinstance(meta, dict):
prints(Messages.M053.format(meta_type=type(meta)),
title=Messages.M052,
exits=1)
# Take dropout and batch size as generators of values -- dropout
# starts high and decays sharply, to force the optimizer to explore.
# Batch size starts at 1 and grows, so that we make updates quickly
# at the beginning of training.
dropout_rates = util.decaying(util.env_opt('dropout_from', 0.2),
util.env_opt('dropout_to', 0.2),
util.env_opt('dropout_decay', 0.0))
batch_sizes = util.compounding(util.env_opt('batch_from', 1),
util.env_opt('batch_to', 16),
util.env_opt('batch_compound', 1.001))
max_doc_len = util.env_opt('max_doc_len', 5000)
corpus = GoldCorpus(train_path, dev_path, limit=n_sents)
n_train_words = corpus.count_train()
# Load pre-trained model. Remove components that we are not
# re-training.
nlp = load(pretrained)
if no_tagger and 'tagger' in nlp.pipe_names:
nlp.remove_pipe('tagger')
if no_parser and 'parser' in nlp.pipe_names:
nlp.remove_pipe('parser')
if no_entities and 'ner' in nlp.pipe_names:
nlp.remove_pipe('ner')
meta.setdefault('name', 'unnamed')
meta['pipeline'] = nlp.pipe_names
meta.setdefault('lang', nlp.lang)
nlp.meta.update(meta)
# Add multi-task objectives
if parser_multitasks:
for objective in parser_multitasks.split(','):
nlp.parser.add_multitask_objective(objective)
if entity_multitasks:
for objective in entity_multitasks.split(','):
nlp.entity.add_multitask_objective(objective)
# Get optimizer
optimizer = nlp.begin_training(lambda: corpus.train_tuples, device=use_gpu)
nlp._optimizer = None
print(nlp.pipe_names)
print(nlp.pipeline)
print(
"Itn. Dep Loss NER Loss UAS NER P. NER R. NER F. Tag % Token % CPU WPS GPU WPS"
)
try:
train_docs = corpus.train_docs(nlp,
projectivize=True,
noise_level=0.0,
gold_preproc=gold_preproc,
max_length=0)
train_docs = list(train_docs)
for i in range(n_iter):
with tqdm.tqdm(total=n_train_words, leave=False) as pbar:
losses = {}
for batch in minibatch(train_docs, size=batch_sizes):
batch = [(d, g) for (d, g) in batch
if len(d) < max_doc_len]
if not batch:
continue
docs, golds = zip(*batch)
nlp.update(docs,
golds,
sgd=optimizer,
drop=next(dropout_rates),
losses=losses)
pbar.update(sum(len(doc) for doc in docs))
with nlp.use_params(optimizer.averages):
util.set_env_log(False)
epoch_model_path = output_path / ('model%d' % i)
nlp.to_disk(epoch_model_path)
nlp_loaded = util.load_model_from_path(epoch_model_path)
dev_docs = list(
corpus.dev_docs(nlp_loaded, gold_preproc=gold_preproc))
nwords = sum(len(doc_gold[0]) for doc_gold in dev_docs)
start_time = timer()
scorer = nlp_loaded.evaluate(dev_docs, verbose)
end_time = timer()
if use_gpu < 0:
gpu_wps = None
cpu_wps = nwords / (end_time - start_time)
else:
gpu_wps = nwords / (end_time - start_time)
with Model.use_device('cpu'):
nlp_loaded = util.load_model_from_path(
epoch_model_path)
dev_docs = list(
corpus.dev_docs(nlp_loaded,
gold_preproc=gold_preproc))
start_time = timer()
scorer = nlp_loaded.evaluate(dev_docs)
end_time = timer()
cpu_wps = nwords / (end_time - start_time)
acc_loc = (output_path / ('model%d' % i) / 'accuracy.json')
with acc_loc.open('w') as file_:
file_.write(json_dumps(scorer.scores))
meta_loc = output_path / ('model%d' % i) / 'meta.json'
meta['accuracy'] = scorer.scores
meta['speed'] = {
'nwords': nwords,
'cpu': cpu_wps,
'gpu': gpu_wps
}
meta['vectors'] = {
'width': nlp.vocab.vectors_length,
'vectors': len(nlp.vocab.vectors),
'keys': nlp.vocab.vectors.n_keys
}
meta['lang'] = nlp.lang
meta['pipeline'] = nlp.pipe_names
meta['spacy_version'] = '>=%s' % about.__version__
meta.setdefault('name', 'model%d' % i)
meta.setdefault('version', version)
with meta_loc.open('w') as file_:
file_.write(json_dumps(meta))
util.set_env_log(True)
print_progress(i,
losses,
scorer.scores,
cpu_wps=cpu_wps,
gpu_wps=gpu_wps)
finally:
print("Saving model...")
with nlp.use_params(optimizer.averages):
final_model_path = output_path / 'model-final'
nlp.to_disk(final_model_path)
def retrain_model(project, model=None, n_iter=30):
"""Load the model, set up the pipeline and train the entity recognizer."""
dropout_rates = util.decaying(util.env_opt('dropout_from', 0.2),
util.env_opt('dropout_to', 0.2),
util.env_opt('dropout_decay', 0.0))
batch_sizes = util.compounding(util.env_opt('batch_from', 1),
util.env_opt('batch_to', 16),
util.env_opt('batch_compound', 1.001))
if model == 'model_1':
output_model = 'model_2'
else:
output_model = 'model_1'
al_project = ContentType.objects.get(app_label="spacyal",
model="al_project").model_class()
project = al_project.objects.get(pk=project)
base_d = '/'.join(project.texts.path.split('/')[:-1])
output_dir = os.path.join(base_d, output_model)
if project.len_training_data() < project.num_retrain:
message = {'folder': os.path.join(base_d, model),
'retrained': False, 'project': project.pk}
return message
TRAIN_DATA, eval_data, hist_object = project.get_training_data(
include_all=True, include_negative=True)
nlp = spacy.load(os.path.join(base_d, model))# load existing spaCy model
if project.project_history_set.all().count() == 1:
project_history = ContentType.objects.get(
app_label="spacyal", model="project_history").model_class()
ev = test_model(eval_data, nlp)
f1 = ev.compute_f1()
hist2 = project_history.objects.create(
project=project, eval_f1=f1['fbeta'],
eval_precission=f1['precission'], eval_recall=f1['recall'])
hist2.cases_training.add(*list(hist_object.cases_training.all()))
hist2.cases_evaluation.add(*list(hist_object.cases_evaluation.all()))
TRAIN_DATA = mix_train_data(nlp, TRAIN_DATA)
with open(os.path.join(base_d, 'training_data.json'), 'w') as outp:
json.dump(TRAIN_DATA, outp)
r = nlp.get_pipe('ner')
# get names of other pipes to disable them during training
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != 'ner']
count_prog_list = list(range(0, n_iter, int(n_iter/10)))
with nlp.disable_pipes(*other_pipes):
optimizer = nlp.begin_training()
for itn in range(n_iter):
if itn in count_prog_list:
current_task.update_state(
state='PROGRESS',
meta={'progress': count_prog_list.index(itn)*10,
'model': output_model, 'project': project.pk})
random.shuffle(TRAIN_DATA)
losses = {}
for batch in util.minibatch(TRAIN_DATA, size=batch_sizes):
texts, annotations = zip(*batch)
nlp.update(
texts, # batch of texts
annotations, # batch of annotations
drop=next(dropout_rates), # dropout - make it harder to memorise data
sgd=optimizer, # callable to update weights
losses=losses)
if not Path(output_dir).exists():
Path(output_dir).mkdir()
nlp.to_disk(output_dir)
print(eval_data)
ev = test_model(eval_data, nlp)
f1 = ev.compute_f1()
hist_object.eval_f1 = f1['fbeta']
hist_object.eval_precission = f1['precission']
hist_object.eval_recall = f1['recall']
hist_object.model_path = output_dir
hist_object.save()
message = {'folder': output_dir, 'retrained': True, 'project': project.pk, 'f1': f1}
return message
def main(model=None,
new_model_name='DCC_ent',
input_dir=input_dir,
saved_model_dir=model_dir,
output_dir=output_dir,
test_dir=test_dir,
n_iter=n_iter):
random.seed(1234)
# create the training from annotated data produced by using Brat
data_reading_start_time = time.time()
training_data = create_training_data(input_dir)
data_reading_end_time = time.time()
data_reading_time = data_reading_end_time - data_reading_start_time
print("--->data reading time: ", data_reading_time)
# check if the user provides an existing language model
if model is not None:
nlp = spacy.load(model) # load existing spaCy model
print("Loaded existing model '%s'" % model)
else:
nlp = spacy.blank('en') # create blank Language class
print("No model provided, created blank 'en' model")
# Add entity recognizer to model if it's not in the pipeline
# nlp.create_pipe works for built-ins that are registered with spaCy
if 'ner' not in nlp.pipe_names:
ner = nlp.create_pipe('ner')
nlp.add_pipe(ner)
else:
# otherwise, get it, so we can add labels to it
ner = nlp.get_pipe('ner')
# add all new entities to the recognizer
for i in range(len(new_entities_list)):
ner.add_label(new_entities_list[i])
if model is None:
optimizer = nlp.begin_training()
else:
# Note that 'begin_training' initializes the models, so it'll zero out
# existing entity types.
optimizer = nlp.entity.create_optimizer()
# start the training of the recognizer (and the time)
training_start_time = time.time()
for itn in range(n_iter):
iter_start_time = time.time()
dropout = decaying(0.4, 0.2, 1.0e-2)
random.shuffle(training_data)
losses = {}
# batch up the examples using spaCy's minibatch
batches = minibatch(training_data, size=compounding(4., 32., 1.001))
for ib, batch in enumerate(batches):
# print(" batch ", ib)
ignore_batch = False
for bl in range(len(batch)):
# print(batch[bl])
# print(len(batch[bl]))
if len(batch[bl]) < 2:
ignore_batch = True
if ignore_batch == True:
continue
texts, annotations = zip(*batch)
# print(texts)
# print(annotations)
nlp.update(texts,
annotations,
sgd=optimizer,
drop=0.35,
losses=losses)
iter_end_time = time.time()
iter_elapsed_time = iter_end_time - iter_start_time
print(' iter:', itn)
print(' Losses', losses)
print(' iter elapsed time:', iter_elapsed_time)
training_end_time = time.time()
print("training time: ", training_end_time - training_start_time)
############################
# test the ner model on a set of text data taken from papers
# (if the user does not provide text data, no testing will be performed)
if test_dir is not None:
# test_ner_model(nlp, test_dir)
test_ner_model(nlp,
test_dir,
output_dir,
out_tag='_ents_from_existing_model')
##########################
# model evaluation
#
# define a set of examples that will be used as ground truth
examples = [
('Deep learning is applied in many every day application with great success in object recognition.',
[(0, 13, 'Method'), (77, 95, 'Task')]),
('Recurrent neural networks are used for forecasting and natural language processing.',
[(0, 25, 'Method'), (39, 50, 'Task'), (55, 82, 'Task')]),
('Convolutional neural networks are frequently used in object recognition and medical image processing.',
[(0, 29, 'Method'), (53, 72, 'Task'), (84, 101, 'Task')])
]
res = ner_eval(nlp, examples)
print("\nModel evaluation results:")
print(res)
############################################
# save trained model
# (if the user does not provide a directory, the trained model will not be saved)
if saved_model_dir is not None:
saved_model_dir = Path(saved_model_dir)
if not saved_model_dir.exists():
saved_model_dir.mkdir()
nlp.meta['name'] = new_model_name # rename model
nlp.to_disk(saved_model_dir)
print("The model was saved to the directory: ", saved_model_dir)
